Patents by Inventor Akira Sui

Akira Sui has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method of producing seal ring
    Patent number: 4517726
    Abstract: A method of producing a seal ring for a floating seal assembly comprising forming a seal ring base from a low carbon steel, the seal ring base having a sealing portion formed thereon, subjecting the sealing portion to shot blasting, plasma spraying a cermet material on the sealing portion of the seal ring base to form a coated layer of the cermet material thereon, and lapping the coated layer to obtain a finished seal ring product having a plasma sprayed and lapped coating of the cermet material on the sealing portion.
    Type: Grant
    Filed: February 19, 1982
    Date of Patent: May 21, 1985
    Inventors: Naohiko Yokoshima, Nobuyoshi Masumoto, Akira Sui